Merged revision 1622187 from tomcat/trunk:
Correct the information written by ExtendedAccessLogValve when a format token x-O(XXX) is used so that multiple values for a header XXX are separated by commas. Identified by Coverity Scan.


git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1622189 13f79535-47bb-0310-9956-ffa450edef68